//
//  UIBarButtonItem+Extension.swift
//  01MicroBlog
//
//  Created by Apple on 15/8/9.
//  Copyright © 2015年 heima. All rights reserved.
//

import UIKit

extension UIBarButtonItem {
    convenience init(imageName:String, target:AnyObject?, action:String?) {
        
        let button = UIButton()
        
        button.setImage(UIImage(named: imageName), forState: UIControlState.Normal)
        button.setImage(UIImage(named: imageName + "_highlighted"), forState: UIControlState.Highlighted)
        
        button.sizeToFit()
        
        if let actionName = action {
            button.addTarget(target, action: Selector(actionName), forControlEvents: UIControlEvents.TouchUpInside)
        }
        
        self.init(customView:button)
    }
}
